The 2021 Nissan X-Trail 2.0L XV Smart Edition, a popular choice in the used cars market, is equipped with several practical tech features, including hill hold assist for stable starts on inclines, a reverse camera to enhance parking safety, a voice recognition control system for hands-free operation of functions like navigation and media, car network connectivity for real-time updates, a central control screen for integrated vehicle management, a built-in dash camera to record driving footage, a tire pressure monitoring system to alert drivers of under-inflated tires, and in-car air purification to maintain a clean cabin environment.